Add Cookie keyword contained non used argument expiry (#846)
Add Cookie keyword contained non used argument expiry (#846)

The expiry argument was not used for anything and therefore
removing the argument.
rtomac/robotframework-selenium2library,SergiuTudos/Selenium2Library,robotframework/SeleniumLibrary,emanlove/robotframework-selenium2library,emanlove/robotframework-selenium2library,emanlove/robotframework-selenium2library,rtomac/robotframework-selenium2library,robotframework/SeleniumLibrary,SergiuTudos/Selenium2Library,SergiuTudos/Selenium2Library,robotframework/SeleniumLibrary,rtomac/robotframework-selenium2library